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Introduction to Why? The Environment An Encounter with Kiki, a Forest Fairy The Natural Environment and the Living Environment The Biosphere and the Ecosystem Destroyed Ecosystems Disappearing Forests Ecosystem Destruction Extinction of Organisms Disappearing Tidal Flats Air Pollution Precious Air The Causes of Air Pollution Scary Smog A Punctured Ozone Layer The Two Faces of Ozone The Earth, Growing Warmer Terrifying Acid Rain How We Can Reduce Air Pollution Water Pollution Polluted Water The Causes of Water Pollution Eutrophication - Algae Blooms and Red Tides Oil Pollution Underground Water Pollution The Effects of Water Pollution How We Can Reduce Water Pollution Soil Pollution The Causes of Soil Pollution The Damage of Soil Pollution How We Can Reduce Soil Pollution